MX2010012131A - A control valve. - Google Patents

A control valve.

Info

Publication number
MX2010012131A
MX2010012131A MX2010012131A MX2010012131A MX2010012131A MX 2010012131 A MX2010012131 A MX 2010012131A MX 2010012131 A MX2010012131 A MX 2010012131A MX 2010012131 A MX2010012131 A MX 2010012131A MX 2010012131 A MX2010012131 A MX 2010012131A
Authority
MX
Mexico
Prior art keywords
cylinder
control valve
pressure
arrangement
valve housing
Prior art date
Application number
MX2010012131A
Other languages
Spanish (es)
Inventor
Agnes Jorgensen
Original Assignee
Frese As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Frese As filed Critical Frese As
Publication of MX2010012131A publication Critical patent/MX2010012131A/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0106—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/52—Means for additional adjustment of the rate of flow
    • F16K1/526—Means for additional adjustment of the rate of flow for limiting the maximum flow rate, using a second valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/32—Means for additional adjustment of the rate of flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7782—With manual or external control for line valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7787—Expansible chamber subject to differential pressures
    • Y10T137/7788—Pressures across fixed choke
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7796—Senses inlet pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7797—Bias variable during operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7801—Balanced valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7809—Reactor surface separated by apertured partition
    • Y10T137/781—In valve stem
    • Y10T137/7811—Also through reactor surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7809—Reactor surface separated by apertured partition
    • Y10T137/782—Reactor surface is diaphragm

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Safety Valves (AREA)
  • Control Of Fluid Pressure (AREA)
  • Taps Or Cocks (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fluid-Driven Valves (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The control valve according to the invention is for use in liquid-carrying systems. It comprises a valve housing (1) having an inlet side (17) and an outlet side (18), said valve housing being provided with a pressure maintaining arrangement for maintaining a constant differential pressure between the inlet and outlet sides, as well as an amount control arrangement for setting the maximum flow amount through the valve and adjustment of it. The control arrangement comprises two cylinder shell elements (2 and 3) cooperating in the flow path, both having material removed from otherwise overlapping areas, thereby generating an uncovered area (25) in the flow path of the control valve. The outer cylinder shell element (3) is stationarily rotatable relative to the valve housing, while the inner cylinder shell element (2) may be rotated by means of a rotatable handle (13), whereby a larger or smaller opening (25) between the cooperating cylinder shell elements (2 and 3) may be provided. Both cylinder shell elements (2 and 3), which cooperate with the seat hole (8) of the valve housing, may also be displaced (26) in the axial direction, resulting in an increase or a decrease of the generated opening (25). Thereby, the flow amount may be adjusted prior to the presetting, e.g. by means of an actuator.

Description

CONTROL VALVE FIELD OF THE INVENTION The invention relates to a control valve having an inlet side and an outlet side in a valve housing, in which a pressure maintenance arrangement is mounted to maintain a constant differential pressure between the inlet and outlet sides , the assembly comprises a roller diaphragm and a sealing member which adjusts itself in a balance between the inlet pressure and the outlet pressure, as well as between the inlet pressure on one side and the outlet pressure, as well as the spring force on the other hand, respectively, and with a quantity control arrangement having an adjustable basic setting and a flow opening reducing arrangement, which can be activated by a spindle connected to an activator, wherein the quantity control is it establishes by the mutual rotation of an orifice having sliding inner and outer sliding faces, and wherein the reduction of the flow established by means of the ac As a basic adjustment takes place by axial movement of the cover face of the downstream cylinder, the object carries a sealing area for cooperation with the valve housing for blocking downstream.
BACKGROUND OF THE INVENTION Control valves containing a differential flow governor combined with an arrangement for presetting and adjusting the amount of liquid flowing through it are known in the art. In such a control valve, a differential pressure governor is used as a pressure maintenance arrangement to maintain a constant differential pressure along an inlet side and an outlet side, regardless of the amount of liquid flowing through of the same, as a sealing member establishes itself in a balance under the action of the inlet pressure on the one hand and the outlet pressure as well as a spring force on the other hand, so that the pressure difference always be the same, regardless of other circumstances, such as the amount of flow through the governor. The provision for the preselection and adjustment of the liquid flow quantity includes a orifice as a quantity control arrangement, which can be adjusted from the outside to a basic preselection, which provides an opening for maximum flow and, in addition, a reductive arrangement of the flow opening, which can be activated by an output trigger , it can be included.
The disclosure of WO 2006 136158 A discloses a control valve for use in liquid transport systems, with a valve housing having an inlet side and an outlet side, wherein the valve housing is provided with a pressure maintaining arrangement for maintaining a constant differential pressure between the inlet and outlet sides, irrespective of the amount of liquid flowing therethrough, as a sealing member contained in conjunction with a roller diaphragm conforms to itself in a balance under the action of the inlet pressure on the one hand and the outlet pressure as well as a spring force on the other hand.
In addition, the valve housing is provided with a quantity control arrangement disposed upstream of the pressure maintaining arrangement and includes an orifice that can be adjusted to a basic preselection, which provides an opening for maximum flow, and additionally includes a reductive arrangement of the flow opening, which can be activated by an external activator, wherein the basic preselection of the flow control arrangement is provided by the mutual rotation of two concentric rings of the orifice with recesses through approximately 180 degrees, which consequently provides an area discovered in the flow path of the control valve, and wherein the reduction of the area discovered in the flow path, thus realized by the impact of the activator as a basic pre-selection, takes place by the axial movement of the concentric object downstream, the object carries an area of sealing for cooperation with the valve housing to block downstream in a position pressed more axially by the activator, i.e., as stipulated in the introductory portion of claim 1.
The drawbacks of this control valve are not related to the function of the valve, but are caused in particular by the high prices of the raw material, such as copper, which constitutes a substantial proportion of the bronze alloys used as bars. Profile as starting material for many internal components in such control valves. Control valves require a lot of machining of many different objects, which are mainly made of bronze, which per se is very expensive and even more implies losses in the sense that the brass material containing copper, acquired in the form of a rod for the production, has a price per kg that is considerably higher than the sales prices per kg of the same bronze alloy, which is sold as chip from the production of the object for the renewed processing to rod material.
To this it must be added that the roller diaphragm incorporated in the pressure maintenance arrangement to maintain the constant differential pressure is easily overloaded, since no relief of the pressure of the inlet pressure takes place on its external side, when the sealing member It is in its pressure position. This impact of permanent pressure on the diaphragm wears and extends the material, which weakens accordingly.
SUMMARY OF THE INVENTION The object of the invention is to remedy these deficiencies and drawbacks, and this is achieved according to the invention by a control valve, wherein the reduction of the uncovered area in the direction of the flow made by the impact of the activator as a basic adjustment, has place by the axial movement also of the object including the face of cooperating cylinder cover upstream, and wherein the sealing area for cooperation with the valve housing to block downstream is carried a greater distance from the axis of the faces of the cylinder cover that the radius of the cooperating cylinder cover face downstream.
This ensures that the material for the cooperating cover faces of the orifice coaxial cylinder is essentially always present within the diameter of the conveyed sealing area. Since, in terms of size, control valves of this type are effectively compared by having the same effective closing diameter of the transported sealing area, the importance of this is that the objects with the cover elements cooperating with the Orifice cylinder can be made of round rod material having a significantly lower diameter and consequently much less material content than the control valves relevant previously known, in which the cooperating faces of the orifice cylinder are presented in diameters that are larger than the effective closing diameter.
When, as stipulated in claims 2 and 3, a capillary channel is configured in such a way that it is blocked from the inlet pressure to the outer side of the roller diaphragm when the spindle is more depressed, the diaphragm will be relieved in its position passive When, as stipulated in claim 4, the spindle is provided with a return spring, by which it will be returned when the pressure by the activator ceases, after which the diaphragm will again operate against the impact of the external pressure.
When, as stipulated in claim 5, the valve housing is made in one piece when casting or forging, an additional simplified machining is achieved, as the machining of the associated splice faces in the valve housing parts is avoided, just as possible to achieve material savings.
When, as stipulated in claim 6, the pressure maintaining arrangement and the quantity control arrangement are mounted in the same opening in the valve housing, a saving of material is also achieved.
When, as stipulated in claim 7, the cooperating cover faces of the coaxial cylinder give the same axial movement, a control valve is achieved which has a more unique, reproducible and safe function in response to the impact of the external actuator.
When, as stipulated in claim 8, the object is configured in such a way that the cooperating cover face of the downstream cylinder is completely or partially surrounded by the sealing member, material savings are also achieved.
Finally, as stipulated in claim 9, it is convenient to provide an externally accessible rotary handle for an object including a rotating cover face cooperating with the coaxial cylinder, whereby the basic adjustment of the quantity control arrangement can be adjusted easily and accurately to a desired basic setting after the system in which the control valve of the invention is assembled has been put into service.
BRIEF DESCRIPTION OF THE DRAWINGS A working example of a control valve according to the invention will now be described more fully with reference to the drawings, in which Figure 1 shows a control valve seen in vertical section, Figure 2 shows an elongated view of the area of the valve designated II in the Figure 1 , Figure 3 shows the same area, but with the spindle in a pressed position, and Figures 4 - 7 show a partially sectioned view of four different basic settings.
DETAILED DESCRIPTION OF THE INVENTION In Figure 1, a control valve according to the invention is shown in a sectional view, which consists of a valve housing 1 having an inlet 17 and an outlet 18. The pressure maintaining mechanism consists of a diaphragm of roller 5 and a sealing member 6 supporting the roller diaphragm. The pressure at the inlet 17 is transferred to the outer side 23 of the roller diaphragm 5 through a bore 12 in the spindle 10 and a capillary channel 22 between the spindle and the cover element of the cylinder 3. From there, the pressure of The inlet will propagate along the outer side 24 of the cover element of the cylinder 5 to the space 23 and consequently to the outer side of the diaphragm 5.
A spring 9 urges the sealing member 6 to its upper position in cooperation with the pressure within the closing diameter of the sealing member 6.
In use, a balance is established between the inlet pressure 17 and the outlet pressure 18 plus the spring force of the spring 9. This differential pressure will therefore be constant with a given spring force.
Figure 2 shows the arrangement for adjusting and optionally blocking the amount of flow. A cover member of the outer cylinder 3 is provided with an annular recess extending over about half the circumference. Within this and coaxially therewith, there is a cover member of the inner cylinder 2 having an annular recess correspondent. The cover element of the inner cylinder 2 is connected to a rotating handle 13 by means of the spindle 10, so that its angular position in relation to the cover element of the outer cylinder 3 can be adjusted by means of the rotary handle 13. Accordingly, the overlap in the circumferential direction between the cylinder engaging elements of cylinder 2 and 3 and consequently the maximum amount of flow through the governor, can be adjusted manually.
The cylinder cover elements 2 and 3 are axially stationary relative to one another. However, both are displaceable axially in relation to the seat hole 8 and consequently also the edge 7 of the seat hole against the action of a compression spring 15.
The axial overlap between the cylinder cover elements 2 and 3 and the edge 7 of the seat hole can be changed by axial displacement, whereby the quantity flowing through the governor can be pre-selected or adjusted within the limits of the preselected maximum value.
In the external position, the flow blockage can be established in that the cylinder cover member 3 after the recess is provided with a radius that is greater than the radius of the seat hole 8, and is made to cooperate with the edge 7 of the hole of seat 8 by axial displacement.
It is shown, in an enlarged view in Figures 2 and 3, how the inlet pressure on the outer side of the roller diaphragm 5 can be restricted, when the spindle 10 and the cylinder cover element 2, 3 are selected in one position. open, as shown in Figure 2, and in the most pressed position, shown in Figure 3, by means of an activator (not shown).
From Figure 2 it appears that the pressure can be diffused via channel 12 in spindle 10 and a capillary channel 21 provided in a recess 22 and a connection 24, which extends externally in the cover element of cylinder 3 and in the space 23 above the roller diaphragm 5.
When, as shown in Figure 3, the spindle 10 is pressed completely, the cover member of the outer cylinder 3 is caused to contact the edge 7 of the seat hole 8, by which flow is interrupted, just as the capillary connection 21 is interrupted in the recess 22 after the spindle 10 has moved a small additional distance in relation to the cover element of the cylinder 3. The small movement of the spindle about 0.5 mm ensures that the blockage takes place after closing, and then a small return spring 20, see Figure 1, which is arranged between a retainer 19 in the spindle 10 and the upper portion of the cover of the cylinder 3 , will return spindle 10 by its spring force.
This is smooth for the roller diaphragm 5, as the inlet pressure is relieved on its outer side, when this pressure impact < it is not needed for the diaphragm function. This ensures that the flexible diaphragm does not undergo an excessive pressure load.
Figures 4, 5, 6 and 7 illustrate the principle of adjustment and control.
Figure 4 shows a relatively small angular rotation 27 between the cylinder cover elements 2 and 3, displaced axially 26 at their greatest distance from the edge 7 of the seat hole, where the flow area generated is indicated by a black area. .
Figure 5 shows the same angular rotation 27, but with the cover elements of the cylinder 2 and 3 displaced in the axial direction 26 in relation to the edge 7 of the seating hole, and the flow area generated in this position is also indicated for the smallest black area 25.
Figure 6 shows an upper angular rotation 27 between the cylinder cover elements 2 and 3, by the axial displacement 26 at its greatest distance from the edge 7 of the seat hole, where the maximum flow area generated is indicated by an area black 25 Figure 7 shows the same upper angular rotation, but with the cylinder cover elements 2 and 3 displaced in the axial direction 26 in relation to the edge 7 of the seating hole, and the flow area generated in this position is also indicated for a black area 25.

Claims (9)

1. A control valve having an inlet side and an outlet side in a valve housing, in which a pressure maintaining arrangement is mounted to maintain a constant differential pressure between the inlet and outlet sides, the assembly comprises a roller diaphragm and a shutter member that adjusts itself in a balance between the inlet pressure and the outlet pressure, as well as between the inlet pressure on one side and the outlet pressure, as well as the spring force on the other side, respectively, and with a quantity control arrangement having an adjustable basic setting and a flow opening reducing arrangement, which can be activated by a spindle connected to an activator, wherein the quantity control is established by the mutual rotation of an orifice having sliding inner and outer sliding cover faces, and wherein the reduction of the flow established by means of the activator as a basic adjustment This is accomplished by the axial movement of the cover face of the downstream cylinder, the object carries a sealing area for cooperation with the valve housing for downstream locking, characterized in that the reduction of the uncovered area in the direction of flow, performed by the impact of the activator as a basic pre-selection, takes place by the axial movement also of the object including the cover face of the upstream cooperating cylinder, and the sealing area for cooperation with the valve housing for blocking downstream is carried a greater distance from the axis of the cylinder cover faces than the radius of the cover face of the downstream cooperating cylinder.
2. The control valve according to claim 1, characterized in that the pressure maintaining arrangement comprises the transfer of the inlet pressure to the outer side of the roller diaphragm by means of a capillary channel in the spindle and the external cylinder element, the channel is closed for transfer in the most pressed position of the activator.
3. The control valve according to claim 2, characterized in that the closure is formed by a valve arrangement having a recess provided internally in the cylinder cover member, with which an external cooperating recess in the spindle is in coupling
4. The control valve according to claims 2 and 3, characterized in that the spindle is provided with a return spring between a fixed retainer mounted on the spindle and the external cylinder element.
5. The control valve according to claim 1, characterized in that the valve housing is in one piece.
6. The control valve according to claims 1-5, characterized in that the pressure maintaining arrangement and the flow control arrangement are mounted in the same opening in the valve housing.
7. The control valve according to claim 1, characterized in that the cooperating cover faces of the coaxial cylinder simultaneously give the same axial movement.
8. The control valve according to claims 1-7, characterized in that the object including the downstream cylinder engaging cover face is completely or partially surrounded by the sealing member.
9. The control valve according to one of the claims, characterized in that a rotating handle is connected non-rotatably with the spindle and the cooperating cover face of the coaxial cylinder.
MX2010012131A 2008-05-05 2009-05-04 A control valve. MX2010012131A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200800634A DK177066B1 (en) 2008-05-05 2008-05-05 Control valve
PCT/DK2009/000102 WO2009135490A2 (en) 2008-05-05 2009-05-04 A control valve

Publications (1)

Publication Number Publication Date
MX2010012131A true MX2010012131A (en) 2010-12-06

Family

ID=41149139

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010012131A MX2010012131A (en) 2008-05-05 2009-05-04 A control valve.

Country Status (16)

Country Link
US (1) US8469052B2 (en)
EP (1) EP2338093B1 (en)
KR (1) KR101597798B1 (en)
CN (1) CN102089725B (en)
AT (1) ATE556367T1 (en)
AU (1) AU2009243857B9 (en)
BR (1) BRPI0912371A2 (en)
CA (1) CA2723696C (en)
DK (2) DK177066B1 (en)
EA (1) EA019954B1 (en)
ES (1) ES2384147T3 (en)
MX (1) MX2010012131A (en)
PL (1) PL2338093T3 (en)
PT (1) PT2338093E (en)
SI (1) SI2338093T1 (en)
WO (1) WO2009135490A2 (en)

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EP2338093A2 (en) 2011-06-29
CA2723696A1 (en) 2009-11-12

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